So, you’re dreaming of turquoise water, jungle-cloaked cliffs, and the kind of sunsets that make your phone storage panic. Thailand’s islands are calling, and yeah, the hype is real. But before you start booking ferries and hunting for that perfect mango sticky rice, let’s talk about what you really need to know to make the most of your trip.

I’ve stripped out the fluff, cut the copy-paste, and packed in the kind of on-the-ground advice you wish someone had given you. Here’s how to avoid rookie mistakes, dodge the crowds (when you want), and find the islands that fit your vibe.

When to Go (and Why Timing Actually Matters)

Thailand’s islands are split into two main zones: the Andaman Coast (think Phuket, Phi Phi, Krabi) and the Gulf Coast (Koh Samui, Koh Phangan, Koh Tao). The dry season for the Andaman side is November to March. Expect blue skies, calm seas, and, yes, crowds. The Gulf gets its best weather from January through April, but it’s usually fine even a bit later.

Translation:
The rainy season is real. Ferries get cancelled. Beaches get flooded. Check the monsoon patterns for each coast before you book, or you might end up marooned at a soggy pier. For up-to-date weather and monsoon forecasts, check TMD Thailand Meteorological Department for detailed regional info.

Don’t forget your sunscreen—unless you want to come back as a spicy lobster!

Getting Around: Reality Check

• Flights: Bangkok to Phuket or Surat Thani is quick and cheap if you book early. Don’t wing it. Last-minute flights can be double or more.
• Ferries & Speedboats: Ferries are chill and cheap, but schedules aren’t always reliable if there’s a storm. Speedboats are faster but rougher. If you get seasick, bring meds. Buy tickets through 12Go.asia (reliable), or at the pier if you like to gamble.
• Local Transport: On the islands, you’ll see songthaews (pick-up trucks), taxis, and motorbike rentals. About those bikes: a lot of travelers end up in Thai hospitals. If you don’t have experience, skip it. Always agree on a price before you get in any vehicle. Metered taxis are rare.

If a monkey tries to steal your hat, it probably looks better on him anyway.

What to Pack (and What to Leave at Home)

• Backpack > suitcase. You’ll be hauling your stuff on and off boats, sometimes wading through water.
• Lightweight clothes, swimwear, and something to cover up for temples.
• High-SPF sunscreen (it’s pricey in Thailand), bug spray (dengue’s a thing), and a reusable water bottle.
• Waterproof dry bag for boat trips. Phones do not float.
• Copies of your passport and insurance details.
• A bit of cash for ferries, markets, or places that just don’t do cards.
• Leave the fancy shoes and heavy makeup at home. No one cares.

Always pack light—I learned the hard way that suitcases hate sand as much as cats hate water.

Money, Visas, and Insurance

• Visa: Most people get 30 days on arrival, but double-check for your country. Rules change, and blog posts aren’t gospel. Check the official Thai visa information here right before your trip.
• Insurance: Buy it. Medical care is good, but accidents (especially on scooters) are common and can cost a fortune if you’re not covered.
• Cash vs. Cards: ATMs are everywhere, but some islands have outages or run out of cash in high season. Bring enough to get by for a couple of days just in case.

Tried renting a scooter? Make sure your sense of balance isn’t still on vacation!

Book Your Thailand Experience

Ready to start planning? Browse and book top-rated tours, activities, and island-hopping adventures on GetYourGuide or Viator. These platforms offer real reviews, customer support, and lots of options for every traveler.

If you get lost, just follow your nose to the nearest pad thai stall.

The Itinerary That Actually Works

Day 1: Bangkok to Phuket

Fly south. Phuket is big, touristy, and a good place to shake off jet lag. Patong is wild, Kata is mellow, and Old Town has charm. Don’t linger too long unless you’re after nightlife.

Days 2-4: Phuket to Koh Phi Phi

The ferry takes about 2 hours. Phi Phi is famous, but it’s not for everyone. Crowded, party-heavy, and expensive for what you get. Visit Maya Bay (see it, don’t swim. Rules are strict to protect the ecosystem). If you want quieter, stay away from Tonsai. The viewpoint hike is worth the sweat.

Warning: Thai mangoes may cause sudden happiness and sticky fingers.

Days 5-6: Phi Phi to Krabi

Ferry to Krabi (Ao Nang or Railay Beach). Railay is stunning and only accessible by longtail boat. If you like climbing or just want to see some of the best beaches on earth, spend a day or two. Take the Four Islands tour if you’re into snorkeling and island scenery.

Days 7-9: Krabi to Koh Samui

Bus plus ferry takes half a day. Samui is big, developed, and has something for everyone. Beach clubs in Chaweng, family vibes in Bophut, and chill in Maenam. The waterfalls are nice for a break from the beach.

If you miss your ferry, don’t worry. In Thailand, time is just a suggestion!

Days 10-12: Koh Samui to Koh Phangan

Short ferry ride. Most people come for the Full Moon Party (Haad Rin), but the north and east have quiet beaches and yoga retreats. If you’re partying, watch your stuff. Petty theft is common. If you’re not, skip Haad Rin and head for Bottle Beach or Thong Nai Pan.

Days 13-15: Koh Phangan to Koh Tao

Koh Tao is diver central. Cheap certifications and underwater life everywhere. If you’re not into diving, there’s still great snorkeling, some sweet hikes, and the best sunsets in the Gulf. Stay near Sairee Beach for action, or Chalok for peace.

Day 16: Back to Bangkok

Ferry to Chumphon or Surat Thani, then bus or train north. Overnight journeys save money and time.

Remember, “just one more beach” is the official motto of island hoppers everywhere.

Tips You’ll Wish You Knew

• Book in advance in high season. Islands fill up fast, especially during festivals or Full moons.
• Bring a little flexibility. Ferries get delayed, the weather changes, and sometimes you’ll find a spot you never want to leave. Don’t over-plan.
• Respect temples and locals. Cover up, take your shoes off, and learn a few basics in Thai (“Sawasdee ka/krap” for hello, “Khob khun ka/krap” for thank you).
• Mosquitoes love tourists. Use repellent, especially at dusk.
• Don’t trust every rental shop. Take photos of any motorbike you rent, and don’t hand over your passport. Offer a cash deposit instead.
• Nightlife is wild, but watch your drink. Spiking and theft happen, especially at Full Moon Parties.
• Plastic waste is a problem. Use refill stations and say no to single-use bottles and bags when you can.

The only thing wilder than the monkeys are the Full Moon Party hangovers.

What’s Overrated (and What’s Not)

• Patong Beach nightlife: Fun for a night, exhausting after three.
• Full Moon Party: Legendary, but crowded and chaotic. Great if you’re into that, miserable if you’re not.
• Hidden Beaches: Worth the effort. Ask locals or long-stay expats.
• Island-hopping tours: Some are tourist traps, but private boat hires can be magical if you split costs with friends.

Ferry delayed? Use the time for a coconut shake and some top-tier people-watching.

Final Word

Thailand’s islands aren’t just Instagram backdrops. They’re full of surprises (some good, some… less so). Go with an open mind, a sense of humor, and a bit of caution. The best memories will come from the places and moments you didn’t plan.

Happy hopping!

Read more!
The Ultimate Thailand Travel Guide: Everything You Need to Know Before You Go